Anodizing increases the surface hardness of aluminum profiles, making them less prone to scratches and dents during operation. This is particularly beneficial for sliding and swing doors, which are frequently handled or exposed to impacts. The hardened layer preserves the door’s smooth functionality and appearance, even in high-traffic areas.

The anodized surface has a low friction coefficient, allowing sliding doors to glide effortlessly on tracks and swing doors to open quietly. This reduces strain on hardware components like hinges and rollers, minimizing noise and ensuring reliable long-term performance with minimal effort from users.

Anodized aluminum profiles perform well in extreme temperatures, from freezing winters to hot summers, without warping or cracking. The oxide layer provides insulation against thermal expansion, ensuring doors fit securely in frames year-round. This adaptability makes them suitable for both interior and exterior applications in various regions.

Founded in 2015, Intop Metal Co., Ltd. specializes in manufacturing and exporting premium aluminum profiles for windows and doors, with 30 years of experience in the aluminum industry and 10 years of exporting experience. We are an aluminum extrusion factory with a full production chain, including extrusion and various surface treatments such as anodizing, powder coating, wood grain, and  other colors such as silver, champagne, bronze, black, brown. We have a variety of molds for different markets to choose from. We also offer customized products and supply accessories upon request, aiming to become the most competitive building material supplier facing the global market!

Our main production base covers more than 400,000 ㎡, has many advanced production lines: 5 sets of melting furnaces, 15 sets of extrusion lines, 4 sets of aging ovens, 1 sets of horizontal anodizing line, 2 sets of powder coating lines, as well as 2 sets of sandblasting machine and 3 transfer wood grain machines.

we have a professional service team experienced in aluminum profile industry and familiar with export procedures, we will be your expert to provide solutions from pre-sales to after-sales, ready for 24-hour online services and efficient communication.